research product . 2019

Increasing water temperatures from changing climate and their effects on the survival of adult sockeye salmon, (Oncorhynchus nerka) on Snake River in the Columbia Basin

Nelson, Bryan Jeffrey;
Open Access English
  • Published: 01 Jan 2019
  • Country: Canada
As a consequence of climate change, many populations of sockeye salmon in the U. S. Pacific Northwest are now experiencing significantly warmer river conditions during their spawning migration from the ocean to their freshwater spawning grounds compared to the 30 year average. The Columbia River witnessed an extended heat wave in 2015 and low flows pushed water temperatures to 21° C, which ended up killing 90 percent of the adult sockeye salmon returning to spawn in their natal streams in the summer months. Fish passage delays at hydro-electric dams potentially compounded this effect. The purpose of this study was to determine if water temperatures had a delay e...
free text keywords: Climate change, Columbia River, Fraser River, Snake River, Sockeye salmon, Water temperatures
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